Performance Tools is your friend here. Try a GO PERFORM on a command line.
Bryan Burns
iSeries Specialist
ECHO, Incorporated
Lake Zurich, Illinois
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Brian Piotrowski
Sent: Monday, August 10, 2009 8:05 AM
To: Midrange Systems Technical Discussion
Subject: System Analysis Suggestions
Hi All,
I'm wondering if anyone can suggest a course of action to help determine out bottlenecks in our AS400 and a plan to improve performance?
A few years ago we upgraded to a 520-9406 machine. However, I have noticed over the past two years that our CPU usage has slowly been creeping up as new programs have been added. As it stands right now, whenever I check CPU usage I hardly ever see it below 80%. Usually it is in the 90%+ range. I know it is frustrating to our users, and I can't blame them - I would hate to wait for jobs to finish for long stretches at a time.
I would like to determine where the bottlenecks are occurring, and I wonder if the group has any suggestions? Looking at the active jobs, I suspect it may have something to do with all of the web pages that hit the 400 on a regular basis - I see an awful lot of QZDASOINIT jobs occupying a fair chunk of CPU usage. There are other jobs that run regularly that consume a fair amount of usage as well.
Are there any free / built-in programs I can use to analyze the 400 to see where and when these bottlenecks occur? I do have a HW/SW contract on the 400, so could I have IBM come in and perform an analysis on the system to determine our problems? I'd hate to throw a bunch of money upgrading the main storage/DASD/CPU to P20+ if that isn't really the problem (and I'm sure our senior management group would be less than happy as well).
Any ideas would be most appreciated!
Thanks!
Brian.
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Brian Piotrowski
Assistant Mgr. - I.T.
Simcoe Parts Service, Inc.
Ph: 705-435-7814 x343
Fx: 705-435-6746
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http://www.simcoeparts.com
midrange.com
